{"instruction": "You are an expert in event argument extraction. Please extract event arguments and their roles from the input that conform to the schema definition, which already includes event trigger words. If an argument does not exist, return NAN or an empty dictionary. Please respond in the format of a JSON string.", "schema": [{"event_type": "ransom", "arguments": ["payment method", "attack pattern", "attacker", "place", "damage amount", "victim", "tool", "time"]}], "input": "The Baltimore hack comes amid increasing hacking of municipal systems across the country , and follows one in Atlanta last week that paralyzed that city ’s online bill - payment system , with hackers demanding a $ 51,000 payment in bitcoin to unlock it ."}
{"ransom": [{"payment method": "NAN", "attack pattern": "paralyzed that city ’s online bill - payment system", "attacker": "NAN", "place": "Atlanta", "damage amount": "NAN", "victim": "NAN", "tool": "NAN", "time": "last week"}]}